1686cdd19SJun-ichiro itojun Hagino /* $FreeBSD$ */ 233841545SHajimu UMEMOTO /* $KAME: in6_pcb.c,v 1.31 2001/05/21 05:45:10 jinmei Exp $ */ 3686cdd19SJun-ichiro itojun Hagino 4caf43b02SWarner Losh /*- 582cd038dSYoshinobu Inoue * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 682cd038dSYoshinobu Inoue * All rights reserved. 782cd038dSYoshinobu Inoue * 882cd038dSYoshinobu Inoue * Redistribution and use in source and binary forms, with or without 982cd038dSYoshinobu Inoue * modification, are permitted provided that the following conditions 1082cd038dSYoshinobu Inoue * are met: 1182cd038dSYoshinobu Inoue * 1. Redistributions of source code must retain the above copyright 1282cd038dSYoshinobu Inoue * notice, this list of conditions and the following disclaimer. 1382cd038dSYoshinobu Inoue * 2. Redistributions in binary form must reproduce the above copyright 1482cd038dSYoshinobu Inoue * notice, this list of conditions and the following disclaimer in the 1582cd038dSYoshinobu Inoue * documentation and/or other materials provided with the distribution. 1682cd038dSYoshinobu Inoue * 3. Neither the name of the project nor the names of its contributors 1782cd038dSYoshinobu Inoue * may be used to endorse or promote products derived from this software 1882cd038dSYoshinobu Inoue * without specific prior written permission. 1982cd038dSYoshinobu Inoue * 2082cd038dSYoshinobu Inoue * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 2182cd038dSYoshinobu Inoue * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2282cd038dSYoshinobu Inoue * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2382cd038dSYoshinobu Inoue * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 2482cd038dSYoshinobu Inoue * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2582cd038dSYoshinobu Inoue * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2682cd038dSYoshinobu Inoue * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2782cd038dSYoshinobu Inoue * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2882cd038dSYoshinobu Inoue * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2982cd038dSYoshinobu Inoue * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3082cd038dSYoshinobu Inoue * SUCH DAMAGE. 3182cd038dSYoshinobu Inoue * 3282cd038dSYoshinobu Inoue */ 3382cd038dSYoshinobu Inoue 34caf43b02SWarner Losh /*- 3582cd038dSYoshinobu Inoue * Copyright (c) 1982, 1986, 1991, 1993 3682cd038dSYoshinobu Inoue * The Regents of the University of California. All rights reserved. 3782cd038dSYoshinobu Inoue * 3882cd038dSYoshinobu Inoue * Redistribution and use in source and binary forms, with or without 3982cd038dSYoshinobu Inoue * modification, are permitted provided that the following conditions 4082cd038dSYoshinobu Inoue * are met: 4182cd038dSYoshinobu Inoue * 1. Redistributions of source code must retain the above copyright 4282cd038dSYoshinobu Inoue * notice, this list of conditions and the following disclaimer. 4382cd038dSYoshinobu Inoue * 2. Redistributions in binary form must reproduce the above copyright 4482cd038dSYoshinobu Inoue * notice, this list of conditions and the following disclaimer in the 4582cd038dSYoshinobu Inoue * documentation and/or other materials provided with the distribution. 4682cd038dSYoshinobu Inoue * 4. Neither the name of the University nor the names of its contributors 4782cd038dSYoshinobu Inoue * may be used to endorse or promote products derived from this software 4882cd038dSYoshinobu Inoue * without specific prior written permission. 4982cd038dSYoshinobu Inoue * 5082cd038dSYoshinobu Inoue * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 5182cd038dSYoshinobu Inoue * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 5282cd038dSYoshinobu Inoue * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 5382cd038dSYoshinobu Inoue * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 5482cd038dSYoshinobu Inoue * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 5582cd038dSYoshinobu Inoue * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 5682cd038dSYoshinobu Inoue * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 5782cd038dSYoshinobu Inoue * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 5882cd038dSYoshinobu Inoue * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5982cd038dSYoshinobu Inoue * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 6082cd038dSYoshinobu Inoue * SUCH DAMAGE. 6182cd038dSYoshinobu Inoue * 6282cd038dSYoshinobu Inoue * @(#)in_pcb.c 8.2 (Berkeley) 1/4/94 6382cd038dSYoshinobu Inoue */ 6482cd038dSYoshinobu Inoue 6533841545SHajimu UMEMOTO #include "opt_inet.h" 6633841545SHajimu UMEMOTO #include "opt_inet6.h" 676a800098SYoshinobu Inoue #include "opt_ipsec.h" 6882cd038dSYoshinobu Inoue 6982cd038dSYoshinobu Inoue #include <sys/param.h> 7082cd038dSYoshinobu Inoue #include <sys/systm.h> 7182cd038dSYoshinobu Inoue #include <sys/malloc.h> 7282cd038dSYoshinobu Inoue #include <sys/mbuf.h> 73fb59c426SYoshinobu Inoue #include <sys/domain.h> 7482cd038dSYoshinobu Inoue #include <sys/protosw.h> 7582cd038dSYoshinobu Inoue #include <sys/socket.h> 7682cd038dSYoshinobu Inoue #include <sys/socketvar.h> 7782cd038dSYoshinobu Inoue #include <sys/sockio.h> 7882cd038dSYoshinobu Inoue #include <sys/errno.h> 7982cd038dSYoshinobu Inoue #include <sys/time.h> 80acd3428bSRobert Watson #include <sys/priv.h> 8182cd038dSYoshinobu Inoue #include <sys/proc.h> 8282cd038dSYoshinobu Inoue #include <sys/jail.h> 8382cd038dSYoshinobu Inoue 8494540027SJeff Roberson #include <vm/uma.h> 8582cd038dSYoshinobu Inoue 8682cd038dSYoshinobu Inoue #include <net/if.h> 8782cd038dSYoshinobu Inoue #include <net/if_types.h> 8882cd038dSYoshinobu Inoue #include <net/route.h> 8982cd038dSYoshinobu Inoue 9082cd038dSYoshinobu Inoue #include <netinet/in.h> 9182cd038dSYoshinobu Inoue #include <netinet/in_var.h> 9282cd038dSYoshinobu Inoue #include <netinet/in_systm.h> 93f76fcf6dSJeffrey Hsu #include <netinet/tcp_var.h> 94686cdd19SJun-ichiro itojun Hagino #include <netinet/ip6.h> 95fb59c426SYoshinobu Inoue #include <netinet/ip_var.h> 9682cd038dSYoshinobu Inoue #include <netinet6/ip6_var.h> 9782cd038dSYoshinobu Inoue #include <netinet6/nd6.h> 9882cd038dSYoshinobu Inoue #include <netinet/in_pcb.h> 9982cd038dSYoshinobu Inoue #include <netinet6/in6_pcb.h> 100a1f7e5f8SHajimu UMEMOTO #include <netinet6/scope6_var.h> 10182cd038dSYoshinobu Inoue 10282cd038dSYoshinobu Inoue #ifdef IPSEC 10382cd038dSYoshinobu Inoue #include <netinet6/ipsec.h> 10433841545SHajimu UMEMOTO #ifdef INET6 10582cd038dSYoshinobu Inoue #include <netinet6/ipsec6.h> 10633841545SHajimu UMEMOTO #endif 10733841545SHajimu UMEMOTO #include <netinet6/ah.h> 10833841545SHajimu UMEMOTO #ifdef INET6 1096a800098SYoshinobu Inoue #include <netinet6/ah6.h> 11033841545SHajimu UMEMOTO #endif 11182cd038dSYoshinobu Inoue #include <netkey/key.h> 11282cd038dSYoshinobu Inoue #endif /* IPSEC */ 11382cd038dSYoshinobu Inoue 114b9234fafSSam Leffler #ifdef FAST_IPSEC 115b9234fafSSam Leffler #include <netipsec/ipsec.h> 116b9234fafSSam Leffler #include <netipsec/ipsec6.h> 117b9234fafSSam Leffler #include <netipsec/key.h> 118b9234fafSSam Leffler #endif /* FAST_IPSEC */ 119b9234fafSSam Leffler 12082cd038dSYoshinobu Inoue struct in6_addr zeroin6_addr; 12182cd038dSYoshinobu Inoue 12282cd038dSYoshinobu Inoue int 123b0330ed9SPawel Jakub Dawidek in6_pcbbind(inp, nam, cred) 12482cd038dSYoshinobu Inoue register struct inpcb *inp; 12582cd038dSYoshinobu Inoue struct sockaddr *nam; 126b0330ed9SPawel Jakub Dawidek struct ucred *cred; 12782cd038dSYoshinobu Inoue { 12882cd038dSYoshinobu Inoue struct socket *so = inp->inp_socket; 12982cd038dSYoshinobu Inoue struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)NULL; 13082cd038dSYoshinobu Inoue struct inpcbinfo *pcbinfo = inp->inp_pcbinfo; 13182cd038dSYoshinobu Inoue u_short lport = 0; 1324cc20ab1SSeigo Tanimura int wild = 0, reuseport = (so->so_options & SO_REUSEPORT); 13382cd038dSYoshinobu Inoue 13407385abdSRobert Watson INP_INFO_WLOCK_ASSERT(pcbinfo); 13507385abdSRobert Watson INP_LOCK_ASSERT(inp); 13607385abdSRobert Watson 13782cd038dSYoshinobu Inoue if (!in6_ifaddr) /* XXX broken! */ 13882cd038dSYoshinobu Inoue return (EADDRNOTAVAIL); 13982cd038dSYoshinobu Inoue if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 14082cd038dSYoshinobu Inoue return (EINVAL); 14182cd038dSYoshinobu Inoue if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0) 142421d8aa6SBjoern A. Zeeb wild = INPLOOKUP_WILDCARD; 14382cd038dSYoshinobu Inoue if (nam) { 144a1f7e5f8SHajimu UMEMOTO int error; 145a1f7e5f8SHajimu UMEMOTO 14682cd038dSYoshinobu Inoue sin6 = (struct sockaddr_in6 *)nam; 14782cd038dSYoshinobu Inoue if (nam->sa_len != sizeof(*sin6)) 14882cd038dSYoshinobu Inoue return (EINVAL); 14982cd038dSYoshinobu Inoue /* 15082cd038dSYoshinobu Inoue * family check. 15182cd038dSYoshinobu Inoue */ 15282cd038dSYoshinobu Inoue if (nam->sa_family != AF_INET6) 15382cd038dSYoshinobu Inoue return (EAFNOSUPPORT); 15482cd038dSYoshinobu Inoue 155a1f7e5f8SHajimu UMEMOTO if ((error = sa6_embedscope(sin6, ip6_use_defzone)) != 0) 156a1f7e5f8SHajimu UMEMOTO return(error); 15782cd038dSYoshinobu Inoue 15882cd038dSYoshinobu Inoue lport = sin6->sin6_port; 15982cd038dSYoshinobu Inoue if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 16082cd038dSYoshinobu Inoue /* 16182cd038dSYoshinobu Inoue * Treat SO_REUSEADDR as SO_REUSEPORT for multicast; 16282cd038dSYoshinobu Inoue * allow compepte duplication of binding if 16382cd038dSYoshinobu Inoue * SO_REUSEPORT is set, or if SO_REUSEADDR is set 16482cd038dSYoshinobu Inoue * and a multicast address is bound on both 16582cd038dSYoshinobu Inoue * new and duplicated sockets. 16682cd038dSYoshinobu Inoue */ 16782cd038dSYoshinobu Inoue if (so->so_options & SO_REUSEADDR) 16882cd038dSYoshinobu Inoue reuseport = SO_REUSEADDR|SO_REUSEPORT; 16982cd038dSYoshinobu Inoue } else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 17082cd038dSYoshinobu Inoue struct ifaddr *ia = NULL; 17182cd038dSYoshinobu Inoue 17282cd038dSYoshinobu Inoue sin6->sin6_port = 0; /* yech... */ 17382cd038dSYoshinobu Inoue if ((ia = ifa_ifwithaddr((struct sockaddr *)sin6)) == 0) 17482cd038dSYoshinobu Inoue return (EADDRNOTAVAIL); 17582cd038dSYoshinobu Inoue 17682cd038dSYoshinobu Inoue /* 17782cd038dSYoshinobu Inoue * XXX: bind to an anycast address might accidentally 17882cd038dSYoshinobu Inoue * cause sending a packet with anycast source address. 17933841545SHajimu UMEMOTO * We should allow to bind to a deprecated address, since 1807efe5d92SHajimu UMEMOTO * the application dares to use it. 18182cd038dSYoshinobu Inoue */ 18282cd038dSYoshinobu Inoue if (ia && 18382cd038dSYoshinobu Inoue ((struct in6_ifaddr *)ia)->ia6_flags & 18433841545SHajimu UMEMOTO (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|IN6_IFF_DETACHED)) { 18582cd038dSYoshinobu Inoue return (EADDRNOTAVAIL); 18682cd038dSYoshinobu Inoue } 18782cd038dSYoshinobu Inoue } 18882cd038dSYoshinobu Inoue if (lport) { 18982cd038dSYoshinobu Inoue struct inpcb *t; 19082cd038dSYoshinobu Inoue 19182cd038dSYoshinobu Inoue /* GROSS */ 192fcd1001cSDavid Malone if (ntohs(lport) <= ipport_reservedhigh && 193fcd1001cSDavid Malone ntohs(lport) >= ipport_reservedlow && 194acd3428bSRobert Watson priv_check_cred(cred, PRIV_NETINET_RESERVEDPORT, 195acd3428bSRobert Watson SUSER_ALLOWJAIL)) 19682cd038dSYoshinobu Inoue return (EACCES); 197835d4b89SPawel Jakub Dawidek if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr) && 198fea9ea00SRobert Watson priv_check_cred(so->so_cred, 199fea9ea00SRobert Watson PRIV_NETINET_REUSEPORT, SUSER_ALLOWJAIL) != 0) { 200fb59c426SYoshinobu Inoue t = in6_pcblookup_local(pcbinfo, 20182cd038dSYoshinobu Inoue &sin6->sin6_addr, lport, 20282cd038dSYoshinobu Inoue INPLOOKUP_WILDCARD); 203f66145c6SYaroslav Tykhiy if (t && 204f66145c6SYaroslav Tykhiy ((t->inp_vflag & INP_TIMEWAIT) == 0) && 205f66145c6SYaroslav Tykhiy (so->so_type != SOCK_STREAM || 206f66145c6SYaroslav Tykhiy IN6_IS_ADDR_UNSPECIFIED(&t->in6p_faddr)) && 2074cc20ab1SSeigo Tanimura (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || 20882cd038dSYoshinobu Inoue !IN6_IS_ADDR_UNSPECIFIED(&t->in6p_laddr) || 20956e6821eSOlivier Houchard (t->inp_socket->so_options & SO_REUSEPORT) 21056e6821eSOlivier Houchard == 0) && (so->so_cred->cr_uid != 2114cc20ab1SSeigo Tanimura t->inp_socket->so_cred->cr_uid)) 21282cd038dSYoshinobu Inoue return (EADDRINUSE); 21333841545SHajimu UMEMOTO if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 && 214fb59c426SYoshinobu Inoue IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 215fb59c426SYoshinobu Inoue struct sockaddr_in sin; 216fb59c426SYoshinobu Inoue 217fb59c426SYoshinobu Inoue in6_sin6_2_sin(&sin, sin6); 218fb59c426SYoshinobu Inoue t = in_pcblookup_local(pcbinfo, 219fb59c426SYoshinobu Inoue sin.sin_addr, lport, 220fb59c426SYoshinobu Inoue INPLOOKUP_WILDCARD); 221f66145c6SYaroslav Tykhiy if (t && 222f66145c6SYaroslav Tykhiy ((t->inp_vflag & 223f66145c6SYaroslav Tykhiy INP_TIMEWAIT) == 0) && 224f66145c6SYaroslav Tykhiy (so->so_type != SOCK_STREAM || 225f66145c6SYaroslav Tykhiy ntohl(t->inp_faddr.s_addr) == 226f66145c6SYaroslav Tykhiy INADDR_ANY) && 227fb59c426SYoshinobu Inoue (so->so_cred->cr_uid != 228a4eb4405SYaroslav Tykhiy t->inp_socket->so_cred->cr_uid)) 229fb59c426SYoshinobu Inoue return (EADDRINUSE); 230fb59c426SYoshinobu Inoue } 23182cd038dSYoshinobu Inoue } 23282cd038dSYoshinobu Inoue t = in6_pcblookup_local(pcbinfo, &sin6->sin6_addr, 23382cd038dSYoshinobu Inoue lport, wild); 23456e6821eSOlivier Houchard if (t && (reuseport & ((t->inp_vflag & INP_TIMEWAIT) ? 23556e6821eSOlivier Houchard intotw(t)->tw_so_options : 23656e6821eSOlivier Houchard t->inp_socket->so_options)) == 0) 23782cd038dSYoshinobu Inoue return (EADDRINUSE); 23833841545SHajimu UMEMOTO if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 && 239fb59c426SYoshinobu Inoue IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 240fb59c426SYoshinobu Inoue struct sockaddr_in sin; 241fb59c426SYoshinobu Inoue 242fb59c426SYoshinobu Inoue in6_sin6_2_sin(&sin, sin6); 243fb59c426SYoshinobu Inoue t = in_pcblookup_local(pcbinfo, sin.sin_addr, 244fb59c426SYoshinobu Inoue lport, wild); 24556e6821eSOlivier Houchard if (t && t->inp_vflag & INP_TIMEWAIT) { 24656e6821eSOlivier Houchard if ((reuseport & 24756e6821eSOlivier Houchard intotw(t)->tw_so_options) == 0 && 24856e6821eSOlivier Houchard (ntohl(t->inp_laddr.s_addr) != 24956e6821eSOlivier Houchard INADDR_ANY || ((inp->inp_vflag & 25056e6821eSOlivier Houchard INP_IPV6PROTO) == 25156e6821eSOlivier Houchard (t->inp_vflag & INP_IPV6PROTO)))) 25256e6821eSOlivier Houchard return (EADDRINUSE); 25356e6821eSOlivier Houchard } 25456e6821eSOlivier Houchard else if (t && 2554cc20ab1SSeigo Tanimura (reuseport & t->inp_socket->so_options) 25656e6821eSOlivier Houchard == 0 && (ntohl(t->inp_laddr.s_addr) != 25756e6821eSOlivier Houchard INADDR_ANY || INP_SOCKAF(so) == 2584cc20ab1SSeigo Tanimura INP_SOCKAF(t->inp_socket))) 259fb59c426SYoshinobu Inoue return (EADDRINUSE); 260fb59c426SYoshinobu Inoue } 26182cd038dSYoshinobu Inoue } 26282cd038dSYoshinobu Inoue inp->in6p_laddr = sin6->sin6_addr; 26382cd038dSYoshinobu Inoue } 26482cd038dSYoshinobu Inoue if (lport == 0) { 265686cdd19SJun-ichiro itojun Hagino int e; 266b0330ed9SPawel Jakub Dawidek if ((e = in6_pcbsetport(&inp->in6p_laddr, inp, cred)) != 0) 267686cdd19SJun-ichiro itojun Hagino return (e); 26882cd038dSYoshinobu Inoue } 269686cdd19SJun-ichiro itojun Hagino else { 27082cd038dSYoshinobu Inoue inp->inp_lport = lport; 27182cd038dSYoshinobu Inoue if (in_pcbinshash(inp) != 0) { 27282cd038dSYoshinobu Inoue inp->in6p_laddr = in6addr_any; 27382cd038dSYoshinobu Inoue inp->inp_lport = 0; 27482cd038dSYoshinobu Inoue return (EAGAIN); 27582cd038dSYoshinobu Inoue } 276686cdd19SJun-ichiro itojun Hagino } 27782cd038dSYoshinobu Inoue return (0); 27882cd038dSYoshinobu Inoue } 27982cd038dSYoshinobu Inoue 28082cd038dSYoshinobu Inoue /* 28182cd038dSYoshinobu Inoue * Transform old in6_pcbconnect() into an inner subroutine for new 28282cd038dSYoshinobu Inoue * in6_pcbconnect(): Do some validity-checking on the remote 28382cd038dSYoshinobu Inoue * address (in mbuf 'nam') and then determine local host address 28482cd038dSYoshinobu Inoue * (i.e., which interface) to use to access that remote host. 28582cd038dSYoshinobu Inoue * 28682cd038dSYoshinobu Inoue * This preserves definition of in6_pcbconnect(), while supporting a 28782cd038dSYoshinobu Inoue * slightly different version for T/TCP. (This is more than 28882cd038dSYoshinobu Inoue * a bit of a kludge, but cleaning up the internal interfaces would 28982cd038dSYoshinobu Inoue * have forced minor changes in every protocol). 29082cd038dSYoshinobu Inoue */ 29182cd038dSYoshinobu Inoue 29282cd038dSYoshinobu Inoue int 29382cd038dSYoshinobu Inoue in6_pcbladdr(inp, nam, plocal_addr6) 29482cd038dSYoshinobu Inoue register struct inpcb *inp; 29582cd038dSYoshinobu Inoue struct sockaddr *nam; 29682cd038dSYoshinobu Inoue struct in6_addr **plocal_addr6; 29782cd038dSYoshinobu Inoue { 29882cd038dSYoshinobu Inoue register struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 29982cd038dSYoshinobu Inoue int error = 0; 300a1f7e5f8SHajimu UMEMOTO struct ifnet *ifp = NULL; 301a1f7e5f8SHajimu UMEMOTO int scope_ambiguous = 0; 30282cd038dSYoshinobu Inoue 3038deea4a8SRobert Watson INP_INFO_WLOCK_ASSERT(inp->inp_pcbinfo); 3048deea4a8SRobert Watson INP_LOCK_ASSERT(inp); 3058deea4a8SRobert Watson 30682cd038dSYoshinobu Inoue if (nam->sa_len != sizeof (*sin6)) 30782cd038dSYoshinobu Inoue return (EINVAL); 30882cd038dSYoshinobu Inoue if (sin6->sin6_family != AF_INET6) 30982cd038dSYoshinobu Inoue return (EAFNOSUPPORT); 31082cd038dSYoshinobu Inoue if (sin6->sin6_port == 0) 31182cd038dSYoshinobu Inoue return (EADDRNOTAVAIL); 31282cd038dSYoshinobu Inoue 313a1f7e5f8SHajimu UMEMOTO if (sin6->sin6_scope_id == 0 && !ip6_use_defzone) 314a1f7e5f8SHajimu UMEMOTO scope_ambiguous = 1; 315a1f7e5f8SHajimu UMEMOTO if ((error = sa6_embedscope(sin6, ip6_use_defzone)) != 0) 316a1f7e5f8SHajimu UMEMOTO return(error); 317a1f7e5f8SHajimu UMEMOTO 31882cd038dSYoshinobu Inoue if (in6_ifaddr) { 31982cd038dSYoshinobu Inoue /* 32082cd038dSYoshinobu Inoue * If the destination address is UNSPECIFIED addr, 32182cd038dSYoshinobu Inoue * use the loopback addr, e.g ::1. 32282cd038dSYoshinobu Inoue */ 32382cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) 32482cd038dSYoshinobu Inoue sin6->sin6_addr = in6addr_loopback; 32582cd038dSYoshinobu Inoue } 326a1f7e5f8SHajimu UMEMOTO 32782cd038dSYoshinobu Inoue /* 32882cd038dSYoshinobu Inoue * XXX: in6_selectsrc might replace the bound local address 32982cd038dSYoshinobu Inoue * with the address specified by setsockopt(IPV6_PKTINFO). 33082cd038dSYoshinobu Inoue * Is it the intended behavior? 33182cd038dSYoshinobu Inoue */ 33282cd038dSYoshinobu Inoue *plocal_addr6 = in6_selectsrc(sin6, inp->in6p_outputopts, 33397d8d152SAndre Oppermann inp->in6p_moptions, NULL, 334a1f7e5f8SHajimu UMEMOTO &inp->in6p_laddr, &ifp, &error); 335a1f7e5f8SHajimu UMEMOTO if (ifp && scope_ambiguous && 336a1f7e5f8SHajimu UMEMOTO (error = in6_setscope(&sin6->sin6_addr, ifp, NULL)) != 0) { 337a1f7e5f8SHajimu UMEMOTO return(error); 338a1f7e5f8SHajimu UMEMOTO } 339a1f7e5f8SHajimu UMEMOTO 34082cd038dSYoshinobu Inoue if (*plocal_addr6 == 0) { 34182cd038dSYoshinobu Inoue if (error == 0) 34282cd038dSYoshinobu Inoue error = EADDRNOTAVAIL; 34382cd038dSYoshinobu Inoue return (error); 34482cd038dSYoshinobu Inoue } 34582cd038dSYoshinobu Inoue /* 34682cd038dSYoshinobu Inoue * Don't do pcblookup call here; return interface in 34782cd038dSYoshinobu Inoue * plocal_addr6 34882cd038dSYoshinobu Inoue * and exit to caller, that will do the lookup. 34982cd038dSYoshinobu Inoue */ 350a1f7e5f8SHajimu UMEMOTO 35182cd038dSYoshinobu Inoue return (0); 35282cd038dSYoshinobu Inoue } 35382cd038dSYoshinobu Inoue 35482cd038dSYoshinobu Inoue /* 35582cd038dSYoshinobu Inoue * Outer subroutine: 35682cd038dSYoshinobu Inoue * Connect from a socket to a specified address. 35782cd038dSYoshinobu Inoue * Both address and port must be specified in argument sin. 35882cd038dSYoshinobu Inoue * If don't have a local address for this socket yet, 35982cd038dSYoshinobu Inoue * then pick one. 36082cd038dSYoshinobu Inoue */ 36182cd038dSYoshinobu Inoue int 362b0330ed9SPawel Jakub Dawidek in6_pcbconnect(inp, nam, cred) 36382cd038dSYoshinobu Inoue register struct inpcb *inp; 36482cd038dSYoshinobu Inoue struct sockaddr *nam; 365b0330ed9SPawel Jakub Dawidek struct ucred *cred; 36682cd038dSYoshinobu Inoue { 36782cd038dSYoshinobu Inoue struct in6_addr *addr6; 36882cd038dSYoshinobu Inoue register struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 36982cd038dSYoshinobu Inoue int error; 37082cd038dSYoshinobu Inoue 37107385abdSRobert Watson INP_INFO_WLOCK_ASSERT(inp->inp_pcbinfo); 37207385abdSRobert Watson INP_LOCK_ASSERT(inp); 37307385abdSRobert Watson 37482cd038dSYoshinobu Inoue /* 37582cd038dSYoshinobu Inoue * Call inner routine, to assign local interface address. 37688ff5695SSUZUKI Shinsuke * in6_pcbladdr() may automatically fill in sin6_scope_id. 37782cd038dSYoshinobu Inoue */ 37882cd038dSYoshinobu Inoue if ((error = in6_pcbladdr(inp, nam, &addr6)) != 0) 37982cd038dSYoshinobu Inoue return (error); 38082cd038dSYoshinobu Inoue 38182cd038dSYoshinobu Inoue if (in6_pcblookup_hash(inp->inp_pcbinfo, &sin6->sin6_addr, 38282cd038dSYoshinobu Inoue sin6->sin6_port, 38382cd038dSYoshinobu Inoue IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr) 38482cd038dSYoshinobu Inoue ? addr6 : &inp->in6p_laddr, 38582cd038dSYoshinobu Inoue inp->inp_lport, 0, NULL) != NULL) { 38682cd038dSYoshinobu Inoue return (EADDRINUSE); 38782cd038dSYoshinobu Inoue } 38882cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) { 38982cd038dSYoshinobu Inoue if (inp->inp_lport == 0) { 390b0330ed9SPawel Jakub Dawidek error = in6_pcbbind(inp, (struct sockaddr *)0, cred); 39182cd038dSYoshinobu Inoue if (error) 39282cd038dSYoshinobu Inoue return (error); 39382cd038dSYoshinobu Inoue } 39482cd038dSYoshinobu Inoue inp->in6p_laddr = *addr6; 39582cd038dSYoshinobu Inoue } 39682cd038dSYoshinobu Inoue inp->in6p_faddr = sin6->sin6_addr; 39782cd038dSYoshinobu Inoue inp->inp_fport = sin6->sin6_port; 39833841545SHajimu UMEMOTO /* update flowinfo - draft-itojun-ipv6-flowlabel-api-00 */ 39933841545SHajimu UMEMOTO inp->in6p_flowinfo &= ~IPV6_FLOWLABEL_MASK; 40033841545SHajimu UMEMOTO if (inp->in6p_flags & IN6P_AUTOFLOWLABEL) 401fb59c426SYoshinobu Inoue inp->in6p_flowinfo |= 402b79274baSHajimu UMEMOTO (htonl(ip6_randomflowlabel()) & IPV6_FLOWLABEL_MASK); 40382cd038dSYoshinobu Inoue 40482cd038dSYoshinobu Inoue in_pcbrehash(inp); 405a1831058SHajimu UMEMOTO #ifdef IPSEC 406a1831058SHajimu UMEMOTO if (inp->inp_socket->so_type == SOCK_STREAM) 407a1831058SHajimu UMEMOTO ipsec_pcbconn(inp->inp_sp); 408a1831058SHajimu UMEMOTO #endif 40982cd038dSYoshinobu Inoue return (0); 41082cd038dSYoshinobu Inoue } 41182cd038dSYoshinobu Inoue 41282cd038dSYoshinobu Inoue void 41382cd038dSYoshinobu Inoue in6_pcbdisconnect(inp) 41482cd038dSYoshinobu Inoue struct inpcb *inp; 41582cd038dSYoshinobu Inoue { 41607385abdSRobert Watson 41707385abdSRobert Watson INP_INFO_WLOCK_ASSERT(inp->inp_pcbinfo); 41807385abdSRobert Watson INP_LOCK_ASSERT(inp); 41907385abdSRobert Watson 42082cd038dSYoshinobu Inoue bzero((caddr_t)&inp->in6p_faddr, sizeof(inp->in6p_faddr)); 42182cd038dSYoshinobu Inoue inp->inp_fport = 0; 42233841545SHajimu UMEMOTO /* clear flowinfo - draft-itojun-ipv6-flowlabel-api-00 */ 42333841545SHajimu UMEMOTO inp->in6p_flowinfo &= ~IPV6_FLOWLABEL_MASK; 42482cd038dSYoshinobu Inoue in_pcbrehash(inp); 425a1831058SHajimu UMEMOTO #ifdef IPSEC 426a1831058SHajimu UMEMOTO ipsec_pcbdisconn(inp->inp_sp); 427a1831058SHajimu UMEMOTO #endif 42882cd038dSYoshinobu Inoue } 42982cd038dSYoshinobu Inoue 43082cd038dSYoshinobu Inoue void 4314c7c478dSRobert Watson in6_pcbdetach(struct inpcb *inp) 43282cd038dSYoshinobu Inoue { 4334c7c478dSRobert Watson 4344c7c478dSRobert Watson KASSERT(inp->inp_socket != NULL, ("in6_pcbdetach: inp_socket == NULL")); 4354c7c478dSRobert Watson inp->inp_socket->so_pcb = NULL; 4364c7c478dSRobert Watson inp->inp_socket = NULL; 4374c7c478dSRobert Watson } 4384c7c478dSRobert Watson 4394c7c478dSRobert Watson void 4404c7c478dSRobert Watson in6_pcbfree(struct inpcb *inp) 4414c7c478dSRobert Watson { 44282cd038dSYoshinobu Inoue struct inpcbinfo *ipi = inp->inp_pcbinfo; 44382cd038dSYoshinobu Inoue 4444c7c478dSRobert Watson KASSERT(inp->inp_socket == NULL, ("in6_pcbfree: inp_socket != NULL")); 44507385abdSRobert Watson INP_INFO_WLOCK_ASSERT(inp->inp_pcbinfo); 44607385abdSRobert Watson INP_LOCK_ASSERT(inp); 44707385abdSRobert Watson 4480f36f0e8SHajimu UMEMOTO #if defined(IPSEC) || defined(FAST_IPSEC) 449333aa64dSBrian Feldman if (inp->in6p_sp != NULL) 45082cd038dSYoshinobu Inoue ipsec6_delete_pcbpolicy(inp); 45182cd038dSYoshinobu Inoue #endif /* IPSEC */ 45282cd038dSYoshinobu Inoue inp->inp_gencnt = ++ipi->ipi_gencnt; 45382cd038dSYoshinobu Inoue in_pcbremlists(inp); 45433841545SHajimu UMEMOTO ip6_freepcbopts(inp->in6p_outputopts); 45533841545SHajimu UMEMOTO ip6_freemoptions(inp->in6p_moptions); 456fb59c426SYoshinobu Inoue /* Check and free IPv4 related resources in case of mapped addr */ 457fb59c426SYoshinobu Inoue if (inp->inp_options) 458fb59c426SYoshinobu Inoue (void)m_free(inp->inp_options); 459fb59c426SYoshinobu Inoue ip_freemoptions(inp->inp_moptions); 46082cd038dSYoshinobu Inoue inp->inp_vflag = 0; 461d915b280SStephan Uphoff INP_UNLOCK(inp); 46294540027SJeff Roberson uma_zfree(ipi->ipi_zone, inp); 46382cd038dSYoshinobu Inoue } 46482cd038dSYoshinobu Inoue 46526ef6ac4SDon Lewis struct sockaddr * 46626ef6ac4SDon Lewis in6_sockaddr(port, addr_p) 46726ef6ac4SDon Lewis in_port_t port; 46826ef6ac4SDon Lewis struct in6_addr *addr_p; 46926ef6ac4SDon Lewis { 47026ef6ac4SDon Lewis struct sockaddr_in6 *sin6; 47126ef6ac4SDon Lewis 472a163d034SWarner Losh MALLOC(sin6, struct sockaddr_in6 *, sizeof *sin6, M_SONAME, M_WAITOK); 47326ef6ac4SDon Lewis bzero(sin6, sizeof *sin6); 47426ef6ac4SDon Lewis sin6->sin6_family = AF_INET6; 47526ef6ac4SDon Lewis sin6->sin6_len = sizeof(*sin6); 47626ef6ac4SDon Lewis sin6->sin6_port = port; 47726ef6ac4SDon Lewis sin6->sin6_addr = *addr_p; 478a1f7e5f8SHajimu UMEMOTO (void)sa6_recoverscope(sin6); /* XXX: should catch errors */ 47926ef6ac4SDon Lewis 48026ef6ac4SDon Lewis return (struct sockaddr *)sin6; 48126ef6ac4SDon Lewis } 48226ef6ac4SDon Lewis 48326ef6ac4SDon Lewis struct sockaddr * 48426ef6ac4SDon Lewis in6_v4mapsin6_sockaddr(port, addr_p) 48526ef6ac4SDon Lewis in_port_t port; 48626ef6ac4SDon Lewis struct in_addr *addr_p; 48726ef6ac4SDon Lewis { 48826ef6ac4SDon Lewis struct sockaddr_in sin; 48926ef6ac4SDon Lewis struct sockaddr_in6 *sin6_p; 49026ef6ac4SDon Lewis 49126ef6ac4SDon Lewis bzero(&sin, sizeof sin); 49226ef6ac4SDon Lewis sin.sin_family = AF_INET; 49326ef6ac4SDon Lewis sin.sin_len = sizeof(sin); 49426ef6ac4SDon Lewis sin.sin_port = port; 49526ef6ac4SDon Lewis sin.sin_addr = *addr_p; 49626ef6ac4SDon Lewis 49726ef6ac4SDon Lewis MALLOC(sin6_p, struct sockaddr_in6 *, sizeof *sin6_p, M_SONAME, 498a163d034SWarner Losh M_WAITOK); 49926ef6ac4SDon Lewis in6_sin_2_v4mapsin6(&sin, sin6_p); 50026ef6ac4SDon Lewis 50126ef6ac4SDon Lewis return (struct sockaddr *)sin6_p; 50226ef6ac4SDon Lewis } 50326ef6ac4SDon Lewis 50482cd038dSYoshinobu Inoue int 50554d642bbSRobert Watson in6_getsockaddr(so, nam) 50682cd038dSYoshinobu Inoue struct socket *so; 50782cd038dSYoshinobu Inoue struct sockaddr **nam; 50882cd038dSYoshinobu Inoue { 50982cd038dSYoshinobu Inoue register struct inpcb *inp; 51026ef6ac4SDon Lewis struct in6_addr addr; 51126ef6ac4SDon Lewis in_port_t port; 51282cd038dSYoshinobu Inoue 51382cd038dSYoshinobu Inoue inp = sotoinpcb(so); 51454d642bbSRobert Watson KASSERT(inp != NULL, ("in6_getsockaddr: inp == NULL")); 51548477723SRobert Watson 516086dafc1SRobert Watson INP_LOCK(inp); 51726ef6ac4SDon Lewis port = inp->inp_lport; 51826ef6ac4SDon Lewis addr = inp->in6p_laddr; 519086dafc1SRobert Watson INP_UNLOCK(inp); 52082cd038dSYoshinobu Inoue 52126ef6ac4SDon Lewis *nam = in6_sockaddr(port, &addr); 52282cd038dSYoshinobu Inoue return 0; 52382cd038dSYoshinobu Inoue } 52482cd038dSYoshinobu Inoue 52582cd038dSYoshinobu Inoue int 52654d642bbSRobert Watson in6_getpeeraddr(so, nam) 52782cd038dSYoshinobu Inoue struct socket *so; 52882cd038dSYoshinobu Inoue struct sockaddr **nam; 52982cd038dSYoshinobu Inoue { 53082cd038dSYoshinobu Inoue struct inpcb *inp; 53126ef6ac4SDon Lewis struct in6_addr addr; 53226ef6ac4SDon Lewis in_port_t port; 53382cd038dSYoshinobu Inoue 53482cd038dSYoshinobu Inoue inp = sotoinpcb(so); 53554d642bbSRobert Watson KASSERT(inp != NULL, ("in6_getpeeraddr: inp == NULL")); 53648477723SRobert Watson 537086dafc1SRobert Watson INP_LOCK(inp); 53826ef6ac4SDon Lewis port = inp->inp_fport; 53926ef6ac4SDon Lewis addr = inp->in6p_faddr; 540086dafc1SRobert Watson INP_UNLOCK(inp); 54182cd038dSYoshinobu Inoue 54226ef6ac4SDon Lewis *nam = in6_sockaddr(port, &addr); 54382cd038dSYoshinobu Inoue return 0; 54482cd038dSYoshinobu Inoue } 54582cd038dSYoshinobu Inoue 54682cd038dSYoshinobu Inoue int 54782cd038dSYoshinobu Inoue in6_mapped_sockaddr(struct socket *so, struct sockaddr **nam) 54882cd038dSYoshinobu Inoue { 54948477723SRobert Watson struct inpcb *inp; 55082cd038dSYoshinobu Inoue int error; 55182cd038dSYoshinobu Inoue 55248477723SRobert Watson inp = sotoinpcb(so); 55348477723SRobert Watson KASSERT(inp != NULL, ("in6_mapped_sockaddr: inp == NULL")); 55448477723SRobert Watson 5555fac4178SHajimu UMEMOTO if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) { 55654d642bbSRobert Watson error = in_getsockaddr(so, nam); 557369dc8ceSEivind Eklund if (error == 0) 55882cd038dSYoshinobu Inoue in6_sin_2_v4mapsin6_in_sock(nam); 5597efe5d92SHajimu UMEMOTO } else { 56054d642bbSRobert Watson /* scope issues will be handled in in6_getsockaddr(). */ 56154d642bbSRobert Watson error = in6_getsockaddr(so, nam); 5627efe5d92SHajimu UMEMOTO } 56382cd038dSYoshinobu Inoue 56482cd038dSYoshinobu Inoue return error; 56582cd038dSYoshinobu Inoue } 56682cd038dSYoshinobu Inoue 56782cd038dSYoshinobu Inoue int 56882cd038dSYoshinobu Inoue in6_mapped_peeraddr(struct socket *so, struct sockaddr **nam) 56982cd038dSYoshinobu Inoue { 57048477723SRobert Watson struct inpcb *inp; 57182cd038dSYoshinobu Inoue int error; 57282cd038dSYoshinobu Inoue 57348477723SRobert Watson inp = sotoinpcb(so); 57448477723SRobert Watson KASSERT(inp != NULL, ("in6_mapped_peeraddr: inp == NULL")); 57548477723SRobert Watson 5765fac4178SHajimu UMEMOTO if ((inp->inp_vflag & (INP_IPV4 | INP_IPV6)) == INP_IPV4) { 57754d642bbSRobert Watson error = in_getpeeraddr(so, nam); 578369dc8ceSEivind Eklund if (error == 0) 57982cd038dSYoshinobu Inoue in6_sin_2_v4mapsin6_in_sock(nam); 58082cd038dSYoshinobu Inoue } else 58154d642bbSRobert Watson /* scope issues will be handled in in6_getpeeraddr(). */ 58254d642bbSRobert Watson error = in6_getpeeraddr(so, nam); 58382cd038dSYoshinobu Inoue 58482cd038dSYoshinobu Inoue return error; 58582cd038dSYoshinobu Inoue } 58682cd038dSYoshinobu Inoue 58782cd038dSYoshinobu Inoue /* 58882cd038dSYoshinobu Inoue * Pass some notification to all connections of a protocol 58982cd038dSYoshinobu Inoue * associated with address dst. The local address and/or port numbers 59082cd038dSYoshinobu Inoue * may be specified to limit the search. The "usual action" will be 59182cd038dSYoshinobu Inoue * taken, depending on the ctlinput cmd. The caller must filter any 59282cd038dSYoshinobu Inoue * cmds that are uninteresting (e.g., no error in the map). 59382cd038dSYoshinobu Inoue * Call the protocol specific routine (if any) to report 59482cd038dSYoshinobu Inoue * any errors for each matching socket. 59582cd038dSYoshinobu Inoue */ 59682cd038dSYoshinobu Inoue void 597f31f65a7SRobert Watson in6_pcbnotify(pcbinfo, dst, fport_arg, src, lport_arg, cmd, cmdarg, notify) 598f31f65a7SRobert Watson struct inpcbinfo *pcbinfo; 599c4c0c592SAlfred Perlstein struct sockaddr *dst; 600c4c0c592SAlfred Perlstein const struct sockaddr *src; 60182cd038dSYoshinobu Inoue u_int fport_arg, lport_arg; 60282cd038dSYoshinobu Inoue int cmd; 603efddf5c6SHajimu UMEMOTO void *cmdarg; 6043ce144eaSJeffrey Hsu struct inpcb *(*notify) __P((struct inpcb *, int)); 60582cd038dSYoshinobu Inoue { 606f31f65a7SRobert Watson struct inpcbhead *head; 607686cdd19SJun-ichiro itojun Hagino struct inpcb *inp, *ninp; 60833841545SHajimu UMEMOTO struct sockaddr_in6 sa6_src, *sa6_dst; 60982cd038dSYoshinobu Inoue u_short fport = fport_arg, lport = lport_arg; 61033841545SHajimu UMEMOTO u_int32_t flowinfo; 61148477723SRobert Watson int errno; 61282cd038dSYoshinobu Inoue 61378f94aa9SRuslan Ermilov if ((unsigned)cmd >= PRC_NCMDS || dst->sa_family != AF_INET6) 61482cd038dSYoshinobu Inoue return; 61533841545SHajimu UMEMOTO 61633841545SHajimu UMEMOTO sa6_dst = (struct sockaddr_in6 *)dst; 61733841545SHajimu UMEMOTO if (IN6_IS_ADDR_UNSPECIFIED(&sa6_dst->sin6_addr)) 61882cd038dSYoshinobu Inoue return; 61982cd038dSYoshinobu Inoue 62082cd038dSYoshinobu Inoue /* 62133841545SHajimu UMEMOTO * note that src can be NULL when we get notify by local fragmentation. 62233841545SHajimu UMEMOTO */ 623c4c0c592SAlfred Perlstein sa6_src = (src == NULL) ? sa6_any : *(const struct sockaddr_in6 *)src; 62433841545SHajimu UMEMOTO flowinfo = sa6_src.sin6_flowinfo; 62533841545SHajimu UMEMOTO 62633841545SHajimu UMEMOTO /* 62782cd038dSYoshinobu Inoue * Redirects go to all references to the destination, 628686cdd19SJun-ichiro itojun Hagino * and use in6_rtchange to invalidate the route cache. 629686cdd19SJun-ichiro itojun Hagino * Dead host indications: also use in6_rtchange to invalidate 630686cdd19SJun-ichiro itojun Hagino * the cache, and deliver the error to all the sockets. 63182cd038dSYoshinobu Inoue * Otherwise, if we have knowledge of the local port and address, 63282cd038dSYoshinobu Inoue * deliver only to that socket. 63382cd038dSYoshinobu Inoue */ 63482cd038dSYoshinobu Inoue if (PRC_IS_REDIRECT(cmd) || cmd == PRC_HOSTDEAD) { 63582cd038dSYoshinobu Inoue fport = 0; 63682cd038dSYoshinobu Inoue lport = 0; 63733841545SHajimu UMEMOTO bzero((caddr_t)&sa6_src.sin6_addr, sizeof(sa6_src.sin6_addr)); 638686cdd19SJun-ichiro itojun Hagino 63933841545SHajimu UMEMOTO if (cmd != PRC_HOSTDEAD) 64033841545SHajimu UMEMOTO notify = in6_rtchange; 64182cd038dSYoshinobu Inoue } 64282cd038dSYoshinobu Inoue errno = inet6ctlerrmap[cmd]; 643712fc218SRobert Watson head = pcbinfo->ipi_listhead; 644f31f65a7SRobert Watson INP_INFO_WLOCK(pcbinfo); 645686cdd19SJun-ichiro itojun Hagino for (inp = LIST_FIRST(head); inp != NULL; inp = ninp) { 646f31f65a7SRobert Watson INP_LOCK(inp); 647686cdd19SJun-ichiro itojun Hagino ninp = LIST_NEXT(inp, inp_list); 648686cdd19SJun-ichiro itojun Hagino 649f31f65a7SRobert Watson if ((inp->inp_vflag & INP_IPV6) == 0) { 650f31f65a7SRobert Watson INP_UNLOCK(inp); 65182cd038dSYoshinobu Inoue continue; 652f31f65a7SRobert Watson } 653686cdd19SJun-ichiro itojun Hagino 654686cdd19SJun-ichiro itojun Hagino /* 655efddf5c6SHajimu UMEMOTO * If the error designates a new path MTU for a destination 656efddf5c6SHajimu UMEMOTO * and the application (associated with this socket) wanted to 657efddf5c6SHajimu UMEMOTO * know the value, notify. Note that we notify for all 658efddf5c6SHajimu UMEMOTO * disconnected sockets if the corresponding application 659efddf5c6SHajimu UMEMOTO * wanted. This is because some UDP applications keep sending 660efddf5c6SHajimu UMEMOTO * sockets disconnected. 661efddf5c6SHajimu UMEMOTO * XXX: should we avoid to notify the value to TCP sockets? 662efddf5c6SHajimu UMEMOTO */ 663efddf5c6SHajimu UMEMOTO if (cmd == PRC_MSGSIZE && (inp->inp_flags & IN6P_MTU) != 0 && 664efddf5c6SHajimu UMEMOTO (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) || 665efddf5c6SHajimu UMEMOTO IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, &sa6_dst->sin6_addr))) { 666efddf5c6SHajimu UMEMOTO ip6_notify_pmtu(inp, (struct sockaddr_in6 *)dst, 667efddf5c6SHajimu UMEMOTO (u_int32_t *)cmdarg); 668efddf5c6SHajimu UMEMOTO } 669efddf5c6SHajimu UMEMOTO 670efddf5c6SHajimu UMEMOTO /* 67133841545SHajimu UMEMOTO * Detect if we should notify the error. If no source and 67233841545SHajimu UMEMOTO * destination ports are specifed, but non-zero flowinfo and 67333841545SHajimu UMEMOTO * local address match, notify the error. This is the case 67433841545SHajimu UMEMOTO * when the error is delivered with an encrypted buffer 67533841545SHajimu UMEMOTO * by ESP. Otherwise, just compare addresses and ports 67633841545SHajimu UMEMOTO * as usual. 677686cdd19SJun-ichiro itojun Hagino */ 67833841545SHajimu UMEMOTO if (lport == 0 && fport == 0 && flowinfo && 67933841545SHajimu UMEMOTO inp->inp_socket != NULL && 68033841545SHajimu UMEMOTO flowinfo == (inp->in6p_flowinfo & IPV6_FLOWLABEL_MASK) && 68133841545SHajimu UMEMOTO IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, &sa6_src.sin6_addr)) 68233841545SHajimu UMEMOTO goto do_notify; 68333841545SHajimu UMEMOTO else if (!IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, 68433841545SHajimu UMEMOTO &sa6_dst->sin6_addr) || 68582cd038dSYoshinobu Inoue inp->inp_socket == 0 || 68682cd038dSYoshinobu Inoue (lport && inp->inp_lport != lport) || 68733841545SHajimu UMEMOTO (!IN6_IS_ADDR_UNSPECIFIED(&sa6_src.sin6_addr) && 68833841545SHajimu UMEMOTO !IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, 68933841545SHajimu UMEMOTO &sa6_src.sin6_addr)) || 690f31f65a7SRobert Watson (fport && inp->inp_fport != fport)) { 691f31f65a7SRobert Watson INP_UNLOCK(inp); 69282cd038dSYoshinobu Inoue continue; 693f31f65a7SRobert Watson } 694686cdd19SJun-ichiro itojun Hagino 69533841545SHajimu UMEMOTO do_notify: 6965a019265SRobert Watson if (notify) { 6975a019265SRobert Watson if ((*notify)(inp, errno)) 6985a019265SRobert Watson INP_UNLOCK(inp); 6995a019265SRobert Watson } else 700f31f65a7SRobert Watson INP_UNLOCK(inp); 70182cd038dSYoshinobu Inoue } 702f31f65a7SRobert Watson INP_INFO_WUNLOCK(pcbinfo); 70382cd038dSYoshinobu Inoue } 70482cd038dSYoshinobu Inoue 70582cd038dSYoshinobu Inoue /* 70682cd038dSYoshinobu Inoue * Lookup a PCB based on the local address and port. 70782cd038dSYoshinobu Inoue */ 70882cd038dSYoshinobu Inoue struct inpcb * 70982cd038dSYoshinobu Inoue in6_pcblookup_local(pcbinfo, laddr, lport_arg, wild_okay) 71082cd038dSYoshinobu Inoue struct inpcbinfo *pcbinfo; 71182cd038dSYoshinobu Inoue struct in6_addr *laddr; 71282cd038dSYoshinobu Inoue u_int lport_arg; 71382cd038dSYoshinobu Inoue int wild_okay; 71482cd038dSYoshinobu Inoue { 71582cd038dSYoshinobu Inoue register struct inpcb *inp; 71682cd038dSYoshinobu Inoue int matchwild = 3, wildcard; 71782cd038dSYoshinobu Inoue u_short lport = lport_arg; 71882cd038dSYoshinobu Inoue 7198deea4a8SRobert Watson INP_INFO_WLOCK_ASSERT(pcbinfo); 7208deea4a8SRobert Watson 72182cd038dSYoshinobu Inoue if (!wild_okay) { 72282cd038dSYoshinobu Inoue struct inpcbhead *head; 72382cd038dSYoshinobu Inoue /* 72482cd038dSYoshinobu Inoue * Look for an unconnected (wildcard foreign addr) PCB that 72582cd038dSYoshinobu Inoue * matches the local address and port we're looking for. 72682cd038dSYoshinobu Inoue */ 727712fc218SRobert Watson head = &pcbinfo->ipi_hashbase[INP_PCBHASH(INADDR_ANY, lport, 728712fc218SRobert Watson 0, pcbinfo->ipi_hashmask)]; 72982cd038dSYoshinobu Inoue LIST_FOREACH(inp, head, inp_hash) { 730369dc8ceSEivind Eklund if ((inp->inp_vflag & INP_IPV6) == 0) 73182cd038dSYoshinobu Inoue continue; 73282cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) && 73382cd038dSYoshinobu Inoue IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 73482cd038dSYoshinobu Inoue inp->inp_lport == lport) { 73582cd038dSYoshinobu Inoue /* 73682cd038dSYoshinobu Inoue * Found. 73782cd038dSYoshinobu Inoue */ 73882cd038dSYoshinobu Inoue return (inp); 73982cd038dSYoshinobu Inoue } 74082cd038dSYoshinobu Inoue } 74182cd038dSYoshinobu Inoue /* 74282cd038dSYoshinobu Inoue * Not found. 74382cd038dSYoshinobu Inoue */ 74482cd038dSYoshinobu Inoue return (NULL); 74582cd038dSYoshinobu Inoue } else { 74682cd038dSYoshinobu Inoue struct inpcbporthead *porthash; 74782cd038dSYoshinobu Inoue struct inpcbport *phd; 74882cd038dSYoshinobu Inoue struct inpcb *match = NULL; 74982cd038dSYoshinobu Inoue /* 75082cd038dSYoshinobu Inoue * Best fit PCB lookup. 75182cd038dSYoshinobu Inoue * 75282cd038dSYoshinobu Inoue * First see if this local port is in use by looking on the 75382cd038dSYoshinobu Inoue * port hash list. 75482cd038dSYoshinobu Inoue */ 755712fc218SRobert Watson porthash = &pcbinfo->ipi_porthashbase[INP_PCBPORTHASH(lport, 756712fc218SRobert Watson pcbinfo->ipi_porthashmask)]; 75782cd038dSYoshinobu Inoue LIST_FOREACH(phd, porthash, phd_hash) { 75882cd038dSYoshinobu Inoue if (phd->phd_port == lport) 75982cd038dSYoshinobu Inoue break; 76082cd038dSYoshinobu Inoue } 76182cd038dSYoshinobu Inoue if (phd != NULL) { 76282cd038dSYoshinobu Inoue /* 76382cd038dSYoshinobu Inoue * Port is in use by one or more PCBs. Look for best 76482cd038dSYoshinobu Inoue * fit. 76582cd038dSYoshinobu Inoue */ 76682cd038dSYoshinobu Inoue LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) { 76782cd038dSYoshinobu Inoue wildcard = 0; 768369dc8ceSEivind Eklund if ((inp->inp_vflag & INP_IPV6) == 0) 76982cd038dSYoshinobu Inoue continue; 77082cd038dSYoshinobu Inoue if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr)) 77182cd038dSYoshinobu Inoue wildcard++; 77282cd038dSYoshinobu Inoue if (!IN6_IS_ADDR_UNSPECIFIED( 77382cd038dSYoshinobu Inoue &inp->in6p_laddr)) { 77482cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(laddr)) 77582cd038dSYoshinobu Inoue wildcard++; 77682cd038dSYoshinobu Inoue else if (!IN6_ARE_ADDR_EQUAL( 77782cd038dSYoshinobu Inoue &inp->in6p_laddr, laddr)) 77882cd038dSYoshinobu Inoue continue; 77982cd038dSYoshinobu Inoue } else { 78082cd038dSYoshinobu Inoue if (!IN6_IS_ADDR_UNSPECIFIED(laddr)) 78182cd038dSYoshinobu Inoue wildcard++; 78282cd038dSYoshinobu Inoue } 78382cd038dSYoshinobu Inoue if (wildcard < matchwild) { 78482cd038dSYoshinobu Inoue match = inp; 78582cd038dSYoshinobu Inoue matchwild = wildcard; 78682cd038dSYoshinobu Inoue if (matchwild == 0) { 78782cd038dSYoshinobu Inoue break; 78882cd038dSYoshinobu Inoue } 78982cd038dSYoshinobu Inoue } 79082cd038dSYoshinobu Inoue } 79182cd038dSYoshinobu Inoue } 79282cd038dSYoshinobu Inoue return (match); 79382cd038dSYoshinobu Inoue } 79482cd038dSYoshinobu Inoue } 79582cd038dSYoshinobu Inoue 796e43cc4aeSHajimu UMEMOTO void 79704f20737SRobert Watson in6_pcbpurgeif0(pcbinfo, ifp) 79804f20737SRobert Watson struct inpcbinfo *pcbinfo; 799e43cc4aeSHajimu UMEMOTO struct ifnet *ifp; 800e43cc4aeSHajimu UMEMOTO { 801e43cc4aeSHajimu UMEMOTO struct in6pcb *in6p; 802e43cc4aeSHajimu UMEMOTO struct ip6_moptions *im6o; 803e43cc4aeSHajimu UMEMOTO struct in6_multi_mship *imm, *nimm; 804e43cc4aeSHajimu UMEMOTO 80504f20737SRobert Watson INP_INFO_RLOCK(pcbinfo); 806712fc218SRobert Watson LIST_FOREACH(in6p, pcbinfo->ipi_listhead, inp_list) { 80704f20737SRobert Watson INP_LOCK(in6p); 808e43cc4aeSHajimu UMEMOTO im6o = in6p->in6p_moptions; 809e43cc4aeSHajimu UMEMOTO if ((in6p->inp_vflag & INP_IPV6) && 810e43cc4aeSHajimu UMEMOTO im6o) { 811e43cc4aeSHajimu UMEMOTO /* 812e43cc4aeSHajimu UMEMOTO * Unselect the outgoing interface if it is being 813e43cc4aeSHajimu UMEMOTO * detached. 814e43cc4aeSHajimu UMEMOTO */ 815e43cc4aeSHajimu UMEMOTO if (im6o->im6o_multicast_ifp == ifp) 816e43cc4aeSHajimu UMEMOTO im6o->im6o_multicast_ifp = NULL; 817e43cc4aeSHajimu UMEMOTO 818e43cc4aeSHajimu UMEMOTO /* 819e43cc4aeSHajimu UMEMOTO * Drop multicast group membership if we joined 820e43cc4aeSHajimu UMEMOTO * through the interface being detached. 821e43cc4aeSHajimu UMEMOTO * XXX controversial - is it really legal for kernel 822e43cc4aeSHajimu UMEMOTO * to force this? 823e43cc4aeSHajimu UMEMOTO */ 824e43cc4aeSHajimu UMEMOTO for (imm = im6o->im6o_memberships.lh_first; 825e43cc4aeSHajimu UMEMOTO imm != NULL; imm = nimm) { 826e43cc4aeSHajimu UMEMOTO nimm = imm->i6mm_chain.le_next; 827e43cc4aeSHajimu UMEMOTO if (imm->i6mm_maddr->in6m_ifp == ifp) { 828e43cc4aeSHajimu UMEMOTO LIST_REMOVE(imm, i6mm_chain); 829e43cc4aeSHajimu UMEMOTO in6_delmulti(imm->i6mm_maddr); 8307ba26d99SDavid E. O'Brien free(imm, M_IP6MADDR); 831e43cc4aeSHajimu UMEMOTO } 832e43cc4aeSHajimu UMEMOTO } 833e43cc4aeSHajimu UMEMOTO } 83404f20737SRobert Watson INP_UNLOCK(in6p); 835e43cc4aeSHajimu UMEMOTO } 83604f20737SRobert Watson INP_INFO_RUNLOCK(pcbinfo); 837e43cc4aeSHajimu UMEMOTO } 838e43cc4aeSHajimu UMEMOTO 83982cd038dSYoshinobu Inoue /* 84082cd038dSYoshinobu Inoue * Check for alternatives when higher level complains 84182cd038dSYoshinobu Inoue * about service problems. For now, invalidate cached 84282cd038dSYoshinobu Inoue * routing information. If the route was created dynamically 84382cd038dSYoshinobu Inoue * (by a redirect), time to try a default gateway again. 84482cd038dSYoshinobu Inoue */ 84582cd038dSYoshinobu Inoue void 84682cd038dSYoshinobu Inoue in6_losing(in6p) 84782cd038dSYoshinobu Inoue struct inpcb *in6p; 84882cd038dSYoshinobu Inoue { 84982cd038dSYoshinobu Inoue /* 85097d8d152SAndre Oppermann * We don't store route pointers in the routing table anymore 85182cd038dSYoshinobu Inoue */ 85297d8d152SAndre Oppermann return; 85382cd038dSYoshinobu Inoue } 85482cd038dSYoshinobu Inoue 85582cd038dSYoshinobu Inoue /* 85682cd038dSYoshinobu Inoue * After a routing change, flush old routing 85782cd038dSYoshinobu Inoue * and allocate a (hopefully) better one. 85882cd038dSYoshinobu Inoue */ 8593ce144eaSJeffrey Hsu struct inpcb * 86082cd038dSYoshinobu Inoue in6_rtchange(inp, errno) 86182cd038dSYoshinobu Inoue struct inpcb *inp; 86282cd038dSYoshinobu Inoue int errno; 86382cd038dSYoshinobu Inoue { 86482cd038dSYoshinobu Inoue /* 86597d8d152SAndre Oppermann * We don't store route pointers in the routing table anymore 86682cd038dSYoshinobu Inoue */ 8673ce144eaSJeffrey Hsu return inp; 86882cd038dSYoshinobu Inoue } 86982cd038dSYoshinobu Inoue 87082cd038dSYoshinobu Inoue /* 87182cd038dSYoshinobu Inoue * Lookup PCB in hash list. 87282cd038dSYoshinobu Inoue */ 87382cd038dSYoshinobu Inoue struct inpcb * 87482cd038dSYoshinobu Inoue in6_pcblookup_hash(pcbinfo, faddr, fport_arg, laddr, lport_arg, wildcard, ifp) 87582cd038dSYoshinobu Inoue struct inpcbinfo *pcbinfo; 87682cd038dSYoshinobu Inoue struct in6_addr *faddr, *laddr; 87782cd038dSYoshinobu Inoue u_int fport_arg, lport_arg; 87882cd038dSYoshinobu Inoue int wildcard; 87982cd038dSYoshinobu Inoue struct ifnet *ifp; 88082cd038dSYoshinobu Inoue { 88182cd038dSYoshinobu Inoue struct inpcbhead *head; 88282cd038dSYoshinobu Inoue register struct inpcb *inp; 88382cd038dSYoshinobu Inoue u_short fport = fport_arg, lport = lport_arg; 88433841545SHajimu UMEMOTO int faith; 88533841545SHajimu UMEMOTO 8868deea4a8SRobert Watson INP_INFO_RLOCK_ASSERT(pcbinfo); 8878deea4a8SRobert Watson 8889494d596SBrooks Davis if (faithprefix_p != NULL) 8899494d596SBrooks Davis faith = (*faithprefix_p)(laddr); 8909494d596SBrooks Davis else 89133841545SHajimu UMEMOTO faith = 0; 89282cd038dSYoshinobu Inoue 89382cd038dSYoshinobu Inoue /* 89482cd038dSYoshinobu Inoue * First look for an exact match. 89582cd038dSYoshinobu Inoue */ 896712fc218SRobert Watson head = &pcbinfo->ipi_hashbase[ 897712fc218SRobert Watson INP_PCBHASH(faddr->s6_addr32[3] /* XXX */, lport, fport, 898712fc218SRobert Watson pcbinfo->ipi_hashmask)]; 899cfa1ca9dSYoshinobu Inoue LIST_FOREACH(inp, head, inp_hash) { 900369dc8ceSEivind Eklund if ((inp->inp_vflag & INP_IPV6) == 0) 90182cd038dSYoshinobu Inoue continue; 90282cd038dSYoshinobu Inoue if (IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, faddr) && 90382cd038dSYoshinobu Inoue IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) && 90482cd038dSYoshinobu Inoue inp->inp_fport == fport && 90582cd038dSYoshinobu Inoue inp->inp_lport == lport) { 90682cd038dSYoshinobu Inoue /* 90782cd038dSYoshinobu Inoue * Found. 90882cd038dSYoshinobu Inoue */ 90982cd038dSYoshinobu Inoue return (inp); 91082cd038dSYoshinobu Inoue } 91182cd038dSYoshinobu Inoue } 91282cd038dSYoshinobu Inoue if (wildcard) { 91382cd038dSYoshinobu Inoue struct inpcb *local_wild = NULL; 91482cd038dSYoshinobu Inoue 915712fc218SRobert Watson head = &pcbinfo->ipi_hashbase[INP_PCBHASH(INADDR_ANY, lport, 916712fc218SRobert Watson 0, pcbinfo->ipi_hashmask)]; 917cfa1ca9dSYoshinobu Inoue LIST_FOREACH(inp, head, inp_hash) { 918369dc8ceSEivind Eklund if ((inp->inp_vflag & INP_IPV6) == 0) 91982cd038dSYoshinobu Inoue continue; 92082cd038dSYoshinobu Inoue if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) && 92182cd038dSYoshinobu Inoue inp->inp_lport == lport) { 92233841545SHajimu UMEMOTO if (faith && (inp->inp_flags & INP_FAITH) == 0) 92382cd038dSYoshinobu Inoue continue; 92482cd038dSYoshinobu Inoue if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, 92582cd038dSYoshinobu Inoue laddr)) 92682cd038dSYoshinobu Inoue return (inp); 92782cd038dSYoshinobu Inoue else if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) 92882cd038dSYoshinobu Inoue local_wild = inp; 92982cd038dSYoshinobu Inoue } 93082cd038dSYoshinobu Inoue } 93182cd038dSYoshinobu Inoue return (local_wild); 93282cd038dSYoshinobu Inoue } 93382cd038dSYoshinobu Inoue 93482cd038dSYoshinobu Inoue /* 93582cd038dSYoshinobu Inoue * Not found. 93682cd038dSYoshinobu Inoue */ 93782cd038dSYoshinobu Inoue return (NULL); 93882cd038dSYoshinobu Inoue } 93982cd038dSYoshinobu Inoue 94082cd038dSYoshinobu Inoue void 94182cd038dSYoshinobu Inoue init_sin6(struct sockaddr_in6 *sin6, struct mbuf *m) 94282cd038dSYoshinobu Inoue { 94382cd038dSYoshinobu Inoue struct ip6_hdr *ip; 94482cd038dSYoshinobu Inoue 94582cd038dSYoshinobu Inoue ip = mtod(m, struct ip6_hdr *); 94682cd038dSYoshinobu Inoue bzero(sin6, sizeof(*sin6)); 94782cd038dSYoshinobu Inoue sin6->sin6_len = sizeof(*sin6); 94882cd038dSYoshinobu Inoue sin6->sin6_family = AF_INET6; 94982cd038dSYoshinobu Inoue sin6->sin6_addr = ip->ip6_src; 950a1f7e5f8SHajimu UMEMOTO 951a1f7e5f8SHajimu UMEMOTO (void)sa6_recoverscope(sin6); /* XXX: should catch errors... */ 95282cd038dSYoshinobu Inoue 95382cd038dSYoshinobu Inoue return; 95482cd038dSYoshinobu Inoue } 955